Becker AR 4201 Installation And Operation Manual
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Becker AR 4201 Installation And Operation Manual

Vhf transceiver
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Enlarged version
VHF Transceiver
AR 4201 - ( )
Installation AND OPERATION
Serial No.: 1000 upwards
Issue 1
15 December 1995
Revision 1
22. May 1996
Revision 2 15 December 1998
Baden Airpark • B 108
D-77836 Rheinmünster Phone +49(0)7229/305-0
E-Mail info@becker-avionics.de or support@becker-avionics.de
23-10-01
D e c e m b e r 1 5 / 9 8

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john Veys
May 16, 2025

problem w/ my 4201. 2 sets of headset jacks. Radio and IC work good on each jack/headset indpendently but the transmit function shuts down one side when both headsets are plugged in

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Mr. Anderson
May 22, 2025

The transmit function of the Becker AR 4201 could shut down when both headset jacks are in use due to an impedance mismatch in the microphone or headset connections. The radio requires specific impedance values: 150 ohms for the microphone and 600 ohms for the headset. If the combined load from both headsets does not match the expected impedance, it can cause incorrect operation of the radio’s internal gain circuitry, leading to distortion or shutdown. Additionally, poor soldering or faulty terminations during installation could also cause such mismatches and result in malfunction.

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Summary of Contents for Becker AR 4201

  • Page 1: Installation And Operation

    VHF Transceiver AR 4201 - ( ) INSTALLATION AND OPERATION Serial No.: 1000 upwards Issue 1 15 December 1995 Revision 1 22. May 1996 Revision 2 15 December 1998 Baden Airpark • B 108 D-77836 Rheinmünster Phone +49(0)7229/305-0 E-Mail info@becker-avionics.de or support@becker-avionics.de...

  • Page 2: Service Bulletin List

    I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) SERVICE BULLETIN LIST SERVICE MOD. INSERTED D A T E SERVICE MOD.

  • Page 3: Record Of Revisions

    I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) RECORD OF REVISIONS REV. ISSUE INSERTED REV. ISSUE INSERTED D A T E...
  • Page 4 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) L I S T O F E F F E C T I V E P A G E S S U B J E C T P A G E D A T E...
  • Page 5 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) TABLE OF CONTENTS P a g e INTRODUCTION G E N E R A L D E S C R I P T I O N 1 - 1...
  • Page 6 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) INTRODUCTION General This manual describes the AR 4201 - ( ) VHF transceiver upwarts serial number 1000. Manufacturer The VHF transceiver was developed and manufactured, and is serviced, by...

  • Page 7: Table Of Contents

    1 - 5 Approval 1 - 5 Environmental Qualification Form 1 - 6 Accessories 1 - 7 Scope of delivery 1 - 8 Fig. 1-1 Standard accessories AR 4201 - ( ) 1 - 9 Page I-I 23-10-01 December 15/95...
  • Page 8 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) GENERAL DESCRIPTION Purpose of equipment The VHF transceiver enables voice communication on 760 channels in the 118.000 MHz to 136.975 MHz range with a channel spacing of 25 kHz.
  • Page 9 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) The VHF transceiver also contains a monitoring stage for the supply voltage which is activated when the VHF transceiver is switched on.
  • Page 10 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) O p t i o n s In the mode 3, a temperature in °C or °F can be measu- red via a temperature sensor which can be externally connected, and this temperature is displayed in the bottom line of the LCD.
  • Page 11 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Receiver data Type of receiver Single superhetrodyne receiver ≤...
  • Page 12 S o f t w a r e The frequency processing, frequency storage and frequency display of the AR 4201 - ( ) are controlled by microprocessors. The software was classified as Category "ESSENTIAL" Level 2 in agreement with the EUROCAE/RTCA Document E D 1 2 A / D O - 1 7 8 A .
  • Page 13 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Environmental Qualification Form The following performance standards under environmental test conditions have been established in accordance with the procedures set forth in EUROCAE/RTCA Document No.

  • Page 14: Installation

    S t o c k N o . 8 7 7 . 4 7 6 - 9 5 0 AR 3201-()/AR 4201-() adaptor 1AD042 S t o c k N o . 8 7 7 . 5 2 2 - 9 5 0 Temperature sensor 1K043 S t o c k N o .
  • Page 15 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Scope of delivery AR 4201-() VHF transceiver Stock No. 868.541-910 4 screws Stock No.
  • Page 16 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Fig. 1-1 Standard accessories AR 4201 - ( ) Page 1-9 23-10-01...
  • Page 17 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) INTENTIONALLY BLANK Page 1-10 23-10-01 December 15/95...
  • Page 18 Interwiring of the VHF transceiver with dynamic mike 2 - 6 Fig. 2-5 Interwiring of the VHF transceiver with standard mike 2 - 7 Fig. 2-6 Interwiring AR 4201 - ( ) with speaker junction 2 - 8 Page II-I 23-10-01 December 15/95...
  • Page 19 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) INSTALLATION General The installation of the VHF transceiver depends on the type of aircraft and its equipment.
  • Page 20 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Installation wiring General The installation wiring diagrams are shown in Fig. 2-4 - 2-6. NOTES : ( 1 ) Use only cable which is fit for use in aircraft (self extinguishing).
  • Page 21 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Speaker connection A 4 to 8 Ohm speaker can be connected to audio output P1- 1AF-asym. C A U T I O N : The magnetic field of a speaker influences the magnetic compass.
  • Page 22 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) "Auxiliary" audio input The AF-AUX (P1/4) auxiliary audio input enables the switching of audio si- gnals from other equipment in the aircraft.
  • Page 23 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Fig. 2-3 Mounting dimensions VHF transceiver Page 2-5 23-10-01 December 15/95...
  • Page 24 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Fig. 2-4 Interwiring of the VHF transceiver with dynamic mike Page 2-6 23-10-01 December 15/95...
  • Page 25 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Fig. 2-5 Interwiring of the VHF transceiver with standard mike Page 2-7 23-10-01 December 15/95...
  • Page 26 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Fig. 2-6 Interwiring AR 4201 - ( ) with speaker junction Page 2-8 23-10-01...
  • Page 27 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Testing after installation Ground test with engine shut down. After installation of the unit, measure the antenna tuning between the base of the antenna and the antenna connecting cable using a VHF reflection-coefficient meter (voltage standing wave meter).
  • Page 28 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) INTENTIONALLY BLANK Page 2-10 23-10-01 December 15/95...
  • Page 29 I N S T A L L A T I O N A N D O P E R A T I O N A R 4 2 0 1 - ( ) Table of contents OPERATION Page Controls and indicators 3 - 1 Meaning of symbols on controls and indicators 3 - 1...
  • Page 30 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) OPE RA TI ON Con trols and in di ca tors Mea ning of sym bols on con trols and in di ca tors Con trols Functi on key Se lec ti on of mode...
  • Page 31 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) ON/OFF switch, com bi ned Ad just ment of vo lu me with vo lu me con trol LCD (li quid crys tal dis play) ele m e n t s...
  • Page 32 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) Rear of unit 50 Ohm an ten na con nec ting so ckets 25-pin D sub mi nia tu re, Equip ment con nec tor f o r c o n nec- male ting the in stal la ti on wi r i n g...
  • Page 33 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) ( 2 ) Ope ra te the trans mit b u t ton and call the ground sta ti on. Hold the mi c r o - pho ne clo se to the lips for op ti mum speech trans mis si on.
  • Page 34 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) Jam ming of trans mit but ton The VHF- trans cei ver is fit t e d with a pro tec ti ve cir cuit to pro tect against jam ming of the trans mit but t o n or a short cir cuit on the key supp l y line.
  • Page 35 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) Mo des: Stan dard mode (dis play of ac ti ve and pre set fre quen cy), set ting the pre set fre quen cy and sto ring fre quen cies in the sto ra ge chan nels.
  • Page 36 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) se lect the chan nel to be over writ ten using the kHz fre quen cy se lec tor and press the STO key.
  • Page 37 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) Scan functi on Note: When ope ra ting the scan mode ob ser ve the re gu la tions for the avia ti on ra dio ser vi ce...
  • Page 38 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) Mode 3 In di ca ti on of supp l y vol ta ge or tem pe ra tu re (op ti on) When the ex chan ge key is pres sed, a c h a n ge from the supp ly vol ta - ge and tem pe ra tu re in di ca ti on oc curs.
  • Page 39 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) ( 5 ) Ser vi ce mode (equip ment con fi gu ra tions) The ser vi ce mode is me a n t to en ab le the ground tech ni ci ans to set the equip ment con fi gu ra ti on and must not be used in flight.
  • Page 40 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) Cal ling up the ser vi ce mode Switch off the VHF trans cei ver. Hold the mode key (MDE) pres sed and at the same time switch on the unit.
  • Page 41 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) Set ting the si de to ne l e v e l Call up the SIdE functi on using the MDE key. The fol lo- wing dis plays ap pe ar.
  • Page 42 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) Ca li bra ting the tem pe ra tu re s e n s o r If no tem pe ra tu re sen s o r i s c o n nec ted, this mode is skip- ped when the mode key is pres s e d .
  • Page 43 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) Swit ching on the scan functi on If the SF8 scan functi on is not ac ti vat ed, than the functi on SF9, SF13 and SF14 will not be dis play ed.
  • Page 44 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) In hi bi ting the fre quen cy sto ra ge Call up functi on SF 11 using the MDE key. The fol lo wing dis play ap p e a r s .
  • Page 45 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) Set ting the “chan nel end” scan ning ran ge.(only dis play ed, if SF8 is ac ti vat ed). Call up functi on SF 14 using the MDE key. The fol l o w i n g...
  • Page 46 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) In hi bi ting the trans mit mode for one or more me mo ry chan n e l (op ti on) Call up functi on SF 17 using the MDE key.
  • Page 47 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) In crea se the au dio po wer out put Call up functi on using the MDE key. The fol lo wing dis plays ap pe ars :...
  • Page 48 IN STAL LA TI ON A N D O P E R A T I O N A R 4 2 0 1 - ( ) Sa fe ty in struc tions The fol lo wing in struc tions must be fol lo wed for safe ope ra ti on of the VHF trans cei - ver: Switch off the unit when star ting or shut ting down en gi nes.
  • Page 49 IN STAL LA TI ON AND OPE RA TI ON AR 4201 - ( ) Blank Page 3-2 0- 23-10-01 De cem ber 15/98...

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